Four-wheel steered vehicle and torque distribution control methods for same
AssigneeHonda Motor Co., Ltd.
InventorsXiaodi Kang, Christopher J. Cymbal, David A. Thompson
Life of this patent
Estimating the term…
Abstract
A method for operating steerable rear wheels of a vehicle includes detecting a rear wheel steering angle of at least one of the steerable rear wheels, and detecting a first vehicular condition. The method further includes determining a weighted rear steering angle value based at least in part upon the rear wheel steering angle and the first vehicular condition, and controlling the steerable rear wheels in response to the weighted rear steering angle value.
Claims20
A method for controlling torque distribution to steerable rear wheels of a vehicle, the method comprising:
- detecting a rear wheel steering angle of at least one of the steerable rear wheels;
- transmitting the rear wheel steering angle from a first controller to a second controller, the first controller being configured to facilitate steering of the steerable rear wheels and the second controller being configured to facilitate distribution of torque among the steerable rear wheels;
- detecting a first vehicular condition;
- and
- at the second controller, performing the following:
- determining a weighted rear steering angle value based at least in part upon the rear wheel steering angle and the first vehicular condition;
- and
- controlling the steerable rear wheels in response to the weighted rear steering angle value.
A method for controlling torque distribution to steerable rear wheels of a vehicle, the method comprising:
- detecting a rear wheel steering angle of at least one of the steerable rear wheels;
- detecting a first vehicular condition;
- determining a weighted rear steering angle value based at least in part upon the rear wheel steering angle and the first vehicular condition;
- determining a first control authority for a first controller based at least in part upon the weighted rear steering angle value, the first controller being configured to facilitate steering of the steerable rear wheels;
- determining a second control authority for a second controller based at least in part upon the weighted rear steering angle value, the second controller being configured to facilitate distribution of torque among the steerable rear wheels;
- varying each of the first control authority and the second control authority in response to a change in the weighted rear steering angle value;
- and
- controlling the steering and the distribution of torque of the steerable rear wheels in response to the first control authority and the second control authority.
A method for controlling torque distribution to steerable rear wheels of a vehicle, the method comprising:
- determining a first control authority for a first controller, the first controller being configured to facilitate steering of the steerable rear wheels;
- determining a second control authority for a second controller, the second controller being configured to facilitate distribution of torque among the steerable rear wheels;
- varying each of the first control authority and the second control authority simultaneously and inversely proportionately to one another;
- and
- controlling the steering and the distribution of torque of the steerable rear wheels in response to the first control authority and the second control authority.
Dependencies are inferred from the claim text.